A Host Based Intrusion Detect System (HIDS) will protect a server by using its local logs and data to detect anomalies. Incorrect answers are Network Intrusion Prevention System (NIPS) and Network Intrusion Detection System (NIDS). FIDS is a made up acronym.
A host-based intrusion detection system (HIDS) is an intrusion detection system that is capable of monitoring and analyzing the internals of a computing system as well as the network packets on its network interfaces, similar to the way a network-based intrusion detection system (NIDS) operates. This was the first type of intrusion detection software to have been designed, with the original target system being the mainframe computer where outside interaction was infrequent.